Tập 1147: Các thám tử nhí đến công viên giải trí Beika vào ngày cuối cùng trước khi đóng cửa vô thời hạn.

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On Beika Amusement Park's final day before indefinite closure, the Detective Boys visit it for one last time. One hour before the closure, the Detective Boys get on the Ferris Wheel and spot Takagi and Chiba in the park's security control room. After entering the room, they find Takagi and Chiba dressed as security guards and conducting a stakeout. Without any other choice, Takagi explains the case behind the reason for the stakeout. Six years ago, two thieves conducted a robbery on a nearby jewelry store. (Source: DCW Wiki)